Radiator

So the water pump on my 413 Industrial motor is huge. The lower hose on that things is at least a 3 Inch hose and the top is at least 2 inch. What am I gonna do about a radiator. This motor is going in a 85 dodge shortbed truck. Am I gonna have to find a 4 core radiator like for a imperial or new yorker. Help me out guys. Thanks.